package typeinfo;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

class DynamicProxyHandler implements InvocationHandler{
    private Object proxied;

    public DynamicProxyHandler(Object proxied) {
        this.proxied = proxied;
    }

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        System.out.println("**** proxy: "+proxy.getClass()+
                ".method: "+method+".args: "+args);
        if(args!=null)
            for(Object arg:args)
                System.out.println("  "+arg);
            return method.invoke(proxied,args);
    }
}
public class SimpleDynamicProxy {
    public static void consumer(Interface iface){
        iface.doSomething();
        iface.somethingElse("bonobo");
    }

    public static void main(String[] args) {
        RealObject real=new RealObject();
        consumer(real);
        Interface proxy=(Interface) Proxy.newProxyInstance(
                Interface.class.getClassLoader(),
                new Class[]{Interface.class},
                new DynamicProxyHandler(real));
        consumer(proxy);
    }
}
